英语语法分析

Ths paper reviews the property, some methods about synthesis and use of polyvinyl pyrrolidone.

综述了聚乙烯吡咯烷酮的性质，合成方法及其应用。

The condensation and ammonification tests is proceed by using pyrrolidone as the start material.

以吡咯烷酮为起始原料进行成盐、缩合、氨化试验，考察影响收率的工艺因素。

Refining method with solvent mixed A with N-methyl pyrrolidone was used to decolor the FCC diesel oil.

以溶剂A和N-甲基吡咯烷酮的混合物为萃取剂，对催化裂化柴油进行了脱色精制研究。